Had a cold about 3 weeks ago. It cleared up pretty quickly, but my chest and back were painful, and still are. Wheezy cough and shortness of breath. Went to the Dr's last week, she listened to my chest and diagnosed a chest infection. No treatment needed, just to let it run it's course. Don't want to take up another appointment this near to Christmas, so will it just clear up on it's own? TIA.